Will Pluto eventually collide with Neptune?
A) no, because Pluto's orbit is completely outside Neptune's orbit
B) no, because Pluto's orbit is completely inside Neptune's orbit
C) no, because Pluto's orbit never comes anywhere close to Neptune's orbit
D) no, because the two planets have an orbital resonance that prevents them from getting close to each other
E) Yes, it's likely that they will eventually.
D) no, because the two planets have an orbital resonance that prevents them from getting close to each other
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Which stage of planetary development has all but eliminated much of Earth's surface history?
a. flooding b. cratering c. differentiation d. bombardment e. slow surface evolution
The planet Earth loses heat primarily by
A) conduction. B) convection. C) radiation. D) all of the above E) none of the above
You drop a rock in a pond, and the water waves travel away from the rock with a certain speed. You drop a heavier rock in the water. The speed of the waves in the water from the heavier rock
a. remains unchanged. b. increases. c. decreases. d. cannot be determined.
Light of wavelength 400 nm bombards a surface with work function 2.46 eV. What is the maximum kinetic energy of the photoelectrons from this surface?
A. no photoelectrons are emitted B. 2.46 eV C. 3.30 eV D. 0.640 eV E. 0.840 eV